1. A 'subsistence hunter' who caught pirates to make a living. Zoro didn't start hunting pirates out of a sense of justice or grand conviction. A simple reason: He left his hometown to find the world's greatest swordsman (Mihawk), but due to his notoriously terrible sense of direction, he got lost and couldn't find his way back home. A means of survival: To continue his journey and pay for his next meal, he began acting as a bounty hunter, catching pirates with prices on their heads. Regardless of his intent, his overwhelming skill caused him to become infamous across the seas as the 'Pirate Hunter' first. 2. A 'lone wolf' who was solitary and sharp-edged. During his days as a pirate hunter, he was a solitary swordsman who acted strictly alone. Overwhelming bloodlust: At the time, Zoro was an object of fear to those around him, seen as little more than a 'demonic beast in human skin.' Because he had no circle of comrades, he didn't open his heart to others, exuding a sharp aura of someone who moved only by his own swordsmanship and convictions.